Stop mechanism for turret-lathes.



H. DRESES.

STOP MBGHANISM FOR TURRET LATHES.

Arrmonlol funn we. o, 1911.

1,017,859; Patented Feb. 2o, 1912.

. 3 SHEETS-SHEET l.

H'. DRESES.

STOP MEGHANIBM FOR TURBBT LT'HEB.

` uruoulolr FILED .umm-1911.v

' Patented Feb. 20, 1912.

3 SHEETS-SHEET B.

H. DRESES. STOP MECHANISM POR TURRBT LATHES.

APPLIoATIoN FILED Amm. 1911.

1,017,859. Patented Feb.20,1912.

HENRY DRESES,

F CINCINNATI, OHIO.

STOP MECHANISM FOR TURRETLATHES.

Specification of Letters Patent. Application led August 9, 1911.

Patented Feb. 20, 1912. Serial No. 643,081.

To all whom 'it may concern:

Be it known that I, HENRY Danses, a citizen of the United States, and aresident of Cincinnati, Hamilton county, State of Ohio, have invented acertain new and Improved Stop Mechanism for Turret-Lathes; and T dodeclare the following to be a clear, full, and exact description of theinvention, attention being called to the three sheets of drawings whichaccompany this application and form a part thereof.

This invention consists of certain means whereby in a turret-lathe theforward or fee -motion of the slide which carries the tool-holdingturret is stopped at the proper time when the particular tool which actsat the time has done its work.

It also consists of means and connected devices whereby theturret-carrying slide, in case it is moved by power-feed, may bedisconnected therefrom manually either at any time or automatically atcertain predetermined times.

l'n the following specification and particularly pointed out in theclaims at the end thereof will be found a full description of myinvention, together with its operation, parts and construction, whichlatter is also illustrated in the accompanying three Sheets of drawings,in which Figure 1, is part of a side-elevation of a turret-lathe,showing the turret and adjacent parts of the lathe. Fig. 2, is atop-view of Fig. 1, with parts of it 1n horizontal section taken on line22 of Fig. Fig. 3, is a vertical cross-section on line 3 3 of Fig. 1.Fig. 4, shows certain parts on that side of the lathe opposite to theside shown in Fig. 1, and fully explained hereinafter. -F ig. 5, is avertical section on line 5 5 of Fig. 1. Fig. 6, is a detail View showingportions of Fig. l, also fully explained hereinafter. Fig. 7, is part ofa view similar to the part shown in section in Fig. 2, it being asimilar section taken slightly below the former section.

In the drawing, A indicates the turret mounted for rotation upon a slideB, which latter is fitted for longitudinal movement upon a carriage C.The turret is provided in its side with the usual number of sockets aadapted to receive tools, Sockets for six tools being shown. The properposition of the tool which operates at the time is secured by a bolt 8while occupying one of six boltsockets 9 provided in the lower part ofthe turret. The position of the turret may be rendered more rigid by alocking handle 10 whereby it is tightened down on the slide.' Six pinsshown at 1l project from the underside of the turret and constitute inconjunction with a spring-actuated dog 12, supported on carriage C, theindexlng device for the turret. When the slide with the turret isreturned at the end of the forward feed movement, handle 10 having beeneased oft', contact of one of these pins 11, with stationary member 12causes a artial rotation of the turret so graduated 1t being oliesixthin this case as to brin another tool on the turret into proper positronfor working.

This occurs during the latter part of this s return movement, the firstpart of it having caused a trip-device to become active to withdraw thespring-actuated locking bolt 8 to render such rotation possible. Thistrip-device consists of two complementary parts, one of which, part 13,is carried by the slide. The other part latter is supported on thelathe-bed D on which it is adjustable longitudinally and with referenceto the work-holding chuck carried on the lathe-spindle it being adjustedin position according to the kind of work to be done and the Sizethereof. After its position time being, it is locked in place andbecomes a fixed support for slide B.

15 is a rack on the underside of the slide and 16 is a pinion in meshwith it. This pinion'is mounted upon a shaftl' supported in carriage Cand by its rotation accordingly, the slide may be moved either forward,Vtoward the lathe-spindle, or away therefrom. Rotation may be had byhand by means of lever-handles 18 on one end of shaft 17, or by apower-actuated gearwheel 19 at its other end, operated by the powerdriven feed-shaft 20, actuated in the usual manner from the head-end ofthe lathe where one of its ends is supported.

Since none of the parts so far described are considered new, it isthought theyV have been explained and shown with suiiicient clearnessfor the purpose.

The other end of shaft 20 is support-ed in bearings 21 and carries aworm 22 which is in mesh with a worm-wheel 23 supported on a stud-shaft24 which projects laterally 14 which co-acts4 `therewith is supported incarriage C. This has been determined for the Y from carriage C. There isalso a inion 9.5 which rotates with the worm-wlieel and meshes withgear-wheel 19 on sha-ft 17.

When sliderB iste be moved by hand the power feed is cutout and this 1sdone by dropping the worm out of mesh with the worm-wheel. See dot-tedposition in Figs. Sand 4. 'For this purpose shaft-bearings 21-21 arerovided in connection with a 10. sliding brac et 27, fitted for verticalmovement'upon a guide-wayV 28 provided on the rearside of carriage C. Alimited portien of 011e edge of this bracket is -rovided with teeth toform a rack 29, which teeth are in engagement with a pinion on a rod 31mounted in carriage By means of this Vpinion when rotated by rod 31 thebracket may raised Jfrom its dropped positionand it thereafter rotationet' this 20 rodi-sY levented, it serves also to hold the bracketlaats-elevated positionV as shown in Figs. 3 and14to maintain theworm-gear in o Yrant-ive1connection. A handle 32 1s provided -attheAVother end of rod 31 for its manipulation Vfrom the front-side of thelathe. Y'U-heheh othis handle hasachec-k 33 and as longias this Vcheckis in engagement with,` that Yis supported by a shoulder 34, rotation ofrodY 3l and of pinion 30 thereon prevented'and bracket 27 remains in itselevated position. See Fig. 6. YThis shoulder V.34Y Yistitu-ined withinan opening contained infa bracket' supported to have a limitedhorizontal movement on a uide- 3 Yway 37 provided onY the front-side ocarriage C.;V Ar Vspring Y38 recessedn in the bracket Yiserves to holdthis latter nor- 1l against the hub of arm 32, which sshoulder 34 te aposition in which y-support cheek 33 as soon as this israised above itby manipulacrflhand'le32'.V See Fig. 6. It will that-when bracket 36 ismoved 'Y from-red 31,-checkr33 is deprived of Vportfbyfshoulder 34 andreleases ro'd g 11`his'permits inion Softs; rotate and l Yori-bracket 2thereby disconnecting rin-gear. A spring 39 recessed bethis bracket 27and its guide-way tocause this drop to occur promptly. .actuation ofbracket 36 to cut out the Y otion by power may be had by manua nperation'at any time and automatically at'rpreelfetermined times. E :etsationmanually is Y isndl pivotally carried enV bracket faT Yamst the hub ofhandle 3Q pusher? against this hub it will, by at its lower connectedend. move tir-"away therefrom. This causes LVhitler.34 to move outY frombelow Vthereby tripping the Ysaine and Y gie-the#'worm-supportingVbracket to depf-SeF-ig; 6, dotted' lines, the knocker- Q5 Yarma.beingomittedin thisI view.

3de-eisY by means of a ree @5f-tmc- Y alsoYY s stops 42, another oneAutomatic actuation is provided to stop the forward movement of theslide at the proper' time when a certain tool has done its work, so asto relieve the operator of close attention and precluding possibility ofmistakes and accidents. This is accomplished by a number of stops 452,consisting substantially of screw-threaded pins adjustably seated in theupper part of bracket 36, one stop for each tool-socket in the turret.They act in conjunction with a` swinging dog 43, carried by the slide soas to be im. movable lengthwise with respect thereto and adapted toco-act with all of stops 42, one at the time only, at the forward ormovement of the slide. in contact with one of push bracket 36 awayhandle 32 causing thereby also shoulder '34 to move out from under checkThis latter is thereby tripped and permits the worm-supporting bracketto drop the saine as before described for the manual actuation by handle41. The feed-movement ci the slide is thereby caused to stop and theslide is returned by actuation of handles 18, after which it isre-connected to the powerfeed by re-adjustment of the worm-gear which isdone by manipulation of handle 32. This return-movement of the slide hasalso effected a rotary adjustment of the turret as before described sothat now another tool is in position for action. In due time dog co-actsagain with one of the this time, and by another actuation of bracket 36drops the worm and again cuts out the power-feed as before described. lnorder to thus enable the dog to co-act with another stop and with allthe others successively, an adJustment is required whereby the dog issuccessively moved and set so as to be in position to encounter thevarious stops as it is carried toward them by 'the slide. This is doneautematically and by means actuated by the turret when the saine iscaused to rotate when the slide is returned. For such purpose dog 43 isrigidly mounted upon a rod 44 supported :for rotation in bearings, oneformed by a bracket 45 and the other in an extension 46 of slide B. 47is a pinion on this rod in engagementl with a rack 48 fitted into aguide-way so formed in said extension that the rack is capable ofmovement to or Jfrom the turret.

49 is a spring sleeved upon rod 44 and so connected as to impart to thislatter a normal tendency to rotate the pinion in a direction which wouldmove rack 48 toward the turret. Means are provided on the turret whichact with each rotary movement of it upon said rack and in a manner tomove the same so as to effect a limited rotation of rod 44 in oppositedirection and against the action of spring 49. This movement is lf thisdeg cornes these stops it will from the hub of' facilitates the actionof the pusher-arms f 5. The inner end of rack 48 is thereby held whichthe feed-slide is movably fitted, power-actuated-mechanism to move theslide on its support-involving a worm-wheel and a complementary worm, ashaft near one end of which the worm is supported. a bearing for thisend of the shaft, a bracket of which this bearing forms a part, means onwhich this bracket is supported so as to permit sliding adjustment in amanner whereby the worm may be moved with re- 75. spect to theworm-wheel, a rack and pinion to hold and adjust this bracket, devicestolock the pinion against rotation to cause the sliding bracket to holdthe worm in operative engagement and means to operate these devices toeiiect disenga ment of the worm.

2. In a turret-lathe, thi combination of a turret, a feed-slide uponwhich it is mounted which the feed-slide is movably tilted, 35power-actuated mechanism to move the slide on its support involving aworm-wheel and a complementa worm, a shaft near one end of which thewormis supported, a bearing for this end of the shaft, a bracket 9.1ivof which this bearin forms a part, means on which this bracket issupported so as to permit sliding adjustment in a manner whereby theworm may be moved with respectto the worm-wheel, a rack providedsuicient to change the position of dog 43 to cause it to encounteranother one of stops 42 when again moving forward with the slide. Anyapplicable means causing endwise movement of the rack may be used as forinstance pusher-arms 51 secured to the underside of the turret fromwhich thely; radially project, there being one for eac tool-socket. Theyact upon rack 48 end- Wise and move the same to cause it to rotate rod44 and to change the position of dog 43 as described. They are graduatedas to amount of projection, Fig. 7 showing extremes, the rack beingshown as engaged and held against the action of spring 49, by the onehaving the largest project-ion which accordinglylholds the swinging dogin one of its extreme positions, the highest one as shown in Fig. 5, andin which positurret permits spring 49 to rotate rod 44 to the extentwhich anotherv pusher-arm of less projection permits, said pusherarmlimiting this rotation by its contact with the end of rack 48 and holdsdog 43 in a position in which it is adapted to co-act with the nextsucceeding one of stops 42. A cam-shaped shoe 52 carried at the innerend of rack 48 when they ass in sition opposite the end of the rac `Eacofthe stops 42 is of course properly adjusted by preliminarvtest-movementsbefore a certain line of wor is started. A curved slot 53is provided in bracket 45 to clear such of stops 42 which are`set-out'so far thatthey would interfere with the longer feed-movementof the slide permitted b stops not set out so far. t may oocurrt at workis done in which each recurring feed-motion of the slide is of the sameextent requiring the use of one stop only. In such case only theuppermost stop is used and a locking pin 54 is provided in bracket 45which ma be moved so as to project under do 43 t ereb holding the sameup in the lposition now s own in Fig.

manipulate this rod, Aa '.projection 1 provided in connection with thisrod, a; movable shoulder which, when in engagement with this projection,prevents rotation of the rod and means to actuate this shoulderyeo thatwhen disengaged from the projection men tioned the pinion-carrying rodis released and permitted to rotate. 105 3. In a turret-lathe, thecombination of a turret, a feed-slide upon which itis mounted with arotary adjustment, a support upon which the feed-slide is movablyfitted, power-actuated mechanism to move the slide V on its supportinvolving a worm-wheel and a complementary Worm, a shaft near one endofwhich the worm is supported, a bearing for this end of the shaft, abracket of which this bearing forms a part, means on which this bracketis supported so as to permit sliding adjustment in a manner whereby theworin may be moved with respect to the worm-wheel, a rack provided onthe bracket, a pinion for it, a. rod upon 12H which this pinion ismounted, a handle to manipulate this rod, a projection provided inconnection with this rod, a movable support, a spring whereby it isyieldingly held in engagement with the projection men- 125 tioned so asto prevent rotation of the rod and a handle to manipulate this supportto disengage it from said projection'to release the rod to permitrotation of the pinion.

4. Ina turret-lathe, the combination of a not affected by them. i

The turret slide may of course be also fed forward entirely by hand byuse of handles 18, the worm being simply left in its dropped position,the same stop-devices being used. Or the lathe may be built withoutpower-feed, the same stop-devices and adjustingmeans for them beingused.'In this case bracket 36 which carries stops 42 or an equivalent supportfor them is simply ri 'dly secured in position.

aving described my invention, I claim as new:

1. In a turret-lathe, the combination of a turret, a feed-slide uponwhich it is mounted with a rotary adjustment, a support upon 65. to actupon one of the stops mention turret, a feed-slide upon which it ismount each forward movement of the feed-slide, a

ed with a rotary adjustment, a support upon pinion on this rod, a rackin engagement which the feed-slide is movably fitted, therewith andpusher-arms provided on the power-actuated mechanism to move the turretfrom which they project at gradu- 5 slide on its support involving awormated len ths, one for each turret-tool, they 70 wheel and acomplementary worm, a shaft being a apted to act upon the rack to ronearone end of which the worm is suptate the rod mentioned, one of them uponported, a bearinlg for this end of the shaft, each rotary adjustment ofthe. turret, to a bracket of w ich this bearing forms a cause the dog onsaid rod to act upon a difpart, means on which this bracket is supferentstop on each succeeding forward 75 ported so as to permit slidingadjust-ment movement of the feed-slide. in a manner whereby the worm maybe 7. In a turret-lathe, the combination of a moved with respect to theworm-wheel, a turret, a feed-slide upon which it is mountrack providedon the bracket,.a pinion for ed with a rotary adjustment, a support toit, a rod upon which this pinion is mounted, which the feed-slide ismovably fitted, means gg a handle to manipulate this rod, a projectomove the slide, a series of adjustably tion provided in connection withthis rod, connected stops, one for each turret-tool, a a movablesupport, a spring whereby it is spring-actuated rod supported forrotation yieldingly. held in engagement with the and carried on theoutside of the feed-slide projection mentioned so as to prevent rotaonwhich it extends forwardly so as to ter-` gg, tion of thev rod and meanscarried by the minate opposite the turret from which it is feed-slideand adapted to act upon said suplaterally spaced, a dog rigidly mountedon port in a manner to disengage it from the said rod and adapted to actupon one of projection to release the rod and the pinion the stopsmentioned on each forward movethereon for rotation. ment ,of thefeed-slide, a pinion on this rod 90 5. In a'turret-lathe, thecombination of a a rack in engagement with the pinion and turret, afeed-slide upon which it is mountsupported on the slide so as to be inradial ed with a rotary adjustment, a support upon relation totheturret, and means provided which .the feed-slide is movably fitted, onthe turret and adapted to act upon the 3o :power-actuated mechanism tomove the slide rack to eifect limited rotation of the rod 95 onits'support ninvolvin complementary mentioned upon each rotaryadjustment of wormgear-elements, an a justably connectthe turret so. asto causethe dog on said rod ed s'upp rtjfoit one .of these elements,means to assume diiferent positions to act upon a involving aspring-actuated device to hold diiferent stop on each forward movement-this support in adjustment to maintain the of the feed-slide. 100worm-gear elements in operative engage- 8. In a turret-lathe,thecombination-of a ment, adjustably connected stops provided turret, afeed-slide upon which it is mounted in connection with the devicementioned one with a rota adjustment, a sup ort to for each turretftool,an element carried by which the fee -slide is movably fitte ,means 40the feed-slide and adapted to act upon one to move the slide, "a seriesof adjustably con- 10g of these stops on each forward movement nectedstops, one for each turret-tool, a of said `feedlide and meansautomatically spring-actuated rod supported for` rotation actuated bythe rota adjustment of the and traveling with the feed-slide, a dogturret whereby the e ement mentioned is rigidly mounted on said rod andadapted to 4adjusted to act upon a different stop, on act upon one ofthe stops mentioned/on each 111 each succeeding forward movement of theforward movement of the feed-slide, a feed-slide. pinion on this rod, arack in engagement 6. In a turret-lathe, the combination of a with thepinion and pusher-arms provided turret, a feed-slide upon which'it ismounton the turret from which they project at ed with a rotaryadjustment, a support graduated lengths, one for each turret-tool, 11upon which the feed-slide is movably itthey being adapted to act uponthe rack to ted, power-actuated mechanism to move the rotate the rodmentioned, one of them upon slide on its support involving compleeachrotary adjustment of the turret, to mentary worm-gear-elements, anadjustcause the dog on said rodto act upon a dif- 65 ably connectedsupport for one of these eleferent stop on each succeeding forward 12ments, means involving a spring-actuated movement of the feed-side.deviceto hold this support in adjustment to 9. In a turret-lathe, thecombination of a maintain the worm-gear elements in operturret, afeed-slide upon which it is mounted ative enga ement, adjustablyconnected with a rotary adjustment, a support upon stops provi ed inconnection with the dewhich the feed-slide is movably fitted, 1: vicevmentioned one for each turret-tool, a power-actuated mechanism to movethe slide spring-actuated rod supported for rotation on its supportinvolving a worm-wheel and and traveling with the feed-slide, a do acomplementary 'worm, a shaft near one rigidly mounted on sa'd rod andadapte end of which the worm is su ported, a beare on ing for this'endof the sha a bracket of il.

which this bearing forms a part, means on which this bracket issupported so as to permit sliding adjustment in a manner whereby theworm may be moved with respect to the woi-mwheel, a rack provided on thebracket, a pinion for it, a rod upon which this pinion is mounted, ahandle to manipulntethis rod, a projection provided in connection withthis rod, a movable su port, a spring whereby it is yieldably heldj inengagement with the projection mentioned so as to prevent rotation ofthe rod, adjustnblv connected stops provided in connection with themovable support mentioned, one for each turret-tool, a spring-actuatedrod supported for rotation and traveling with the feedslide, a dogrigidly mounted upon said rod and adapted to act upon one of the stopsmentioned on each forward movement of the feed-slide, a ini'on on thisrod, a rack in engagement t erewith and means pro vided on the turretand adapted to act upon this rack to e'ect limited rotation of the rodmentioned upon each rotary adustment of the turret to cause the dog onsaid rod to act upon a. different stop on each succeeding forwardmovement of the feed-slide.

10. In a turret-lathe, the combination of a turret, a feed-slide uponwhich it is mounted with a rotary adjustment, a su port upon which thefeed-slide is mova y fitted, power-actuated mechanism to move the slideon its support involving a worm-wheel and a complementary worm, a shaftnear one end of which the worm is supported, a bearing for this end ofthe shaft, a bracket of which this bearing forms a part, means on whichthis bracket is supported so as to permit sliding adjustment in a mannerwhereby the worm may be moved with "res ect to the worm-wheel, a rackprovided on t e bracket, a pinion for it a rod upon which this pinion ismounted, a handle to manipulate this i'od a projection provided inconnection with this rod, a movable sup port, a' spring whereby it isyieldingly he d in engagement with the projection mentioned so as toprevent rotation of the rod, adjustably connected stops provided inconnection with the movable support mentioned, one for each .turret-too,a springactuated rod supported for rotation and traveling with thefeed-slide, a do and a pinion on this rod, a rack en a ing the pinionand pusher-arms provi e on the turret from which they project atgraduated lengths, one for each turret-too they being adapted to actupon the rack to rotate the rod mentioned, one of them upon each rotaryadjustment of the turret to cause the dog on said rod to act upon adifferent stop on each succeeding forward movement of the feed-slide.

In testimon 0 whereof, I hereunto affix iiiy signature in t e presenceof two witnesses.

HENRY DRESES. Witnesses:

C. SPxiNcm., T. LE Basu.

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